#include <stdio.h>
struct link {
int date;
struct link* next;
};
struct linklist {
struct link* heat, * p, * q;
};
void Add(struct linklist* a, int date) {
struct link link1;
link1.date = date;
link1.next = NULL;
if (a->heat == NULL) {
a->heat = &link1;
a->p = &link1;(没有这句程序就有问题)
}
else {
link1.next = a->heat;
a->heat = &link1;
}
}
void Print(struct linklist a) {
a.q = a.heat;
for (; a.q; a.q = a.q->next) {
printf("%d\n",a.q->date);
}
}
void main() {
struct linklist linklist1;
linklist1.heat = NULL;
Add(&linklist1, 10);
Add(&linklist1, 12);
Print(linklist1);
}
这是有a->p=@link1的运行结果,正常
、
这是没有a->p=@link1的运行结果,还报错了